Why is 13 an unlucky number?

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There are a few explanations of just why 13 has developed the
reputation for being unlucky:

In Christianity, the Last Supper had thirteen attendants,
during which Jesus Christ revealed that one of the guests would
betray him. Legend tells that afterward one of the Apostles, Judas
Iscariot, did so and turned Jesus over to the Romans. This led to
the crucifixion of Jesus. It is also claimed that Judas sat at the
thirteenth place at the Last Supper's table. As a result of this
betrayal, the number 13 has maintained a bad reputation and has a
superstitious characteristic in Christian culture.

Bearing some similarity to the Christian tradition, in Norse
lore, a banquet of twelve deities was interrupted by the evil god
Loki, making thirteen the number of gods present when the
nigh-immortal god Balder was killed by an arrow made from mistletoe
(his only weakness). His death marked the beginning of Ragnarok,
the end of everything.

Thirteen is the number of circles used in Kaballah's Metatron's
Cube. Although this glyph was typically used as a protective ward
against demons and evil, its use in alchemy and magic may have led
to a darker association with the form, much as a pentagram or
pentacle has.

In Meso-American divination, a trecena is a 13-day period used
in pre-Columbian Meso-American calendars to mark the occurrence of
important cycles of fortune/misfortune.

The ancient Persians, assigning the twelve constellations of
the Zodiac to the months of the year, believed that each sign ruled
over Earth for a millennium. After the passing of this thirteenth
era, chaos would ensue. The Persian tradition of Sizdah Bedar
refers to this belief, in which people leave their houses to avoid
bad luck on the thirteenth day of the Persian Calendar.

The foiled Gunpowder Plot that threatened 17th Century
England's government consisted of thirteen original
conspirators.

Apollo 13 was the only unsuccessful mission by the United
States of America's NASA program to land a mission on the moon,
although fortunately all of the craft's crew returned to Earth
safely.

Traditionally thirteen is reported as the number of steps
leading up to a gallows.

In numerology, twelve is considered the number of completeness
and thus thirteen was seen as disturbing that balance,

Witches were claimed to gather in groups (a coven) of twelve
and during such ceremonies, the devil would appear as the
thirteenth attendee.

On Friday, 13 October 1307, Philip IV of France ordered the
arrest of the (Christian) Knights Templar and seizure of all of
their assets based on accusations of various forms of heresy. Some
were later tortured and then burned at the stake. This is commonly
believed to serve as the origin for the observance of Friday the
13th as an unlucky day, however, no record of the date's importance
as a superstitious holiday is believed to exist before the 19th
century.

Friday the 13th is also theorized to originate from the claim
that Jesus Christ was crucified on a Friday.

In some traditions, however, thirteen is actually a lucky number:

In Judaism, thirteen is the age at which a boy achieves Bar
Mitzvah.

Likewise in Judaism, the Torah states that God has 13
Attributes of Mercy (also shared in some Christian
traditions).

To Sikhs, thirteen is a special number because of the legend of
Guru Nanak Dev.

The thirteenth day following a death is the day on which a
memorial feast is held for the peace of the departed soul in
Hinduism.

Thirteen has special importance in the United States because it
was founded with the thirteen original colonies and can be found
used in a number of patriotic themes and articles, such as The
Great Seal of the United States.

The thirteen lunar cycles led to widespread belief in the
number's importance in pagan cultures, one which diminished as
Christianity spread and began to dismantle, discredit or assimilate
pagan traditions. Or that the Chinese and Egyptians counted 2 feet
and 5 fingers and they thought the next number will be unlucky

A witches coven consists of 13 members Tarot Card number 13 is the Death Card, depicting the Grim Reaper Hotels rarely have a room number 13 The driver of Princess Diana hit p…illar 13 at Place de l'Alma, Paris, France which unfortunately resulted in her death. 13 is the number of people at the Last Supper, with the 13th guest at the table being the traitor, Judas. hope it helps!:)

The number 13 is considered unlucky for a variety of reasons. Oneof the most prominent is that Judas was the 13th person at the LastSupper and betrayed Jesus. Another theory i…s that when there were13 full moons in a year, it upset the regular arrangement of thecalendar that year.

One possible explanation concerns the Last Supper, where there were 13 people sitting at the same table. One of them was a traitor, several died - so that is how the superstit…ion might have been born.

There is no actual way to prove 13 is an unlucky number. It's just by the storys of 13. You could just wait till Friday the thirteenth. That's the day when Jaque De Molay, the… Grand Master of the Templar Knights, was supposedly burned at the stake by the Pope and French King Phillip. It is supposedly when Jaque comes back from the underworld and terrorizes us humans.

It is human tendency to search for cause when a penny is lost. But when gained the reason is attributed to Good fortune or Good luck. This is how 13 has become a victim. Recen…tly Mamata Banergy (trinimul congress leader) won the elections with sweeping majority in calcutta (India) with 13 as a lucky number. all the events fell on 13 only.

13 is an unlucky number. They made the movie 'Friday the 13th' based on Jason. So they decided to call the movie "Friday the 13th" because friday the 13th is supposed to be a …day full of bad luck. So friday the 13th was the perfect title for the movie.

The number 13 is considered an unlucky number in some countries.The end of the Mayan calendar's 13th Baktun was superstitiouslyfeared as a harbinger of the apocalyptic …2012 phenomenon. Fear ofthe number 13 has a specificallyrecognized phobia, Triskaidekaphobia, a word coined in 1911.